Keywords
Inflammatory bowel disease, Colonoscopy, tolerance
Inflammatory bowel disease, Colonoscopy, tolerance
Inflammatory Bowel Disease (IBD), made up primarily of Ulcerative Colitis (UC) and Crohn’s Disease (CD), is a chronic relapsing and remitting intestinal condition that affects an estimated 240,000 patients in the UK1. Medical treatment of IBD may include combinations of steroids, 5-aminosalicylic acids (5-ASAs), immunomodulators and biologic therapies. Failure of medical therapy may lead to surgery. Optimising treatment is dependent on various surrogate markers of inflammation, radiological imaging and direct endoscopic assessment of mucosal inflammation2. More recently, the importance of mucosal healing, as determined at colonoscopy, has been underscored as a key indicator of therapeutic success2,3. Mucosal healing is associated with improved health-related quality of life4, results in a longer time to relapse in CD5, and ultimately in fewer hospital admissions6.
Non-invasive surrogate markers of inflammation such as faecal calprotectin may offer an alternative in the assessment of disease activity in IBD but are yet to be fully evaluated as an alternative to direct visualisation of mucosal healing7. Colonoscopy therefore currently remains the gold standard test for assessing mucosal healing. This potentially means an increasing burden of endoscopic procedures from the current level for IBD patients in the future8. However, colonoscopy is invasive, time consuming and costly, and may be viewed as an unpleasant or intolerable procedure by patients. With this in mind, it is important to assess patients’ perception and tolerance of colonoscopy, particularly since it may be performed increasingly more often to assess mucosal healing. We therefore aimed to assess the perceptions of a cohort of IBD patients consecutively recruited through a specialist IBD clinic at a large regional hospital with respect to their understanding, experience and attitudes towards colonoscopy.
Our study was performed at St George’s Hospital (SGH), which is a large 800 bed regional teaching hospital in central London with a catchment area of about 1.3 million patients. The department of gastroenterology runs weekly IBD specialist clinics. The endoscopy unit performs over 5000 procedures per year and is both a regional bowel cancer screening centre and national colonoscopy training centre. Colonoscopies were either performed by a senior clinician or by a trainee under their direct supervision. Consecutive patients with an established diagnosis of IBD attending the weekly specialist IBD clinic were invited to take part in this study by completing a short questionnaire. Data was collected over a 4 month period between September and December 2013. Data was collected anonymously. There was no specific exclusion criteria and the inclusion criteria was a confirmed diagnosis of IBD with a history of at least one colonoscopy. Consent was presumed by patients’ willingness to complete the survey. They were informed verbally by the clinic staff, that the data they provided would be used in a study to evaluate patients’ perceptions, understanding tolerance and experience of colonoscopy. Ethical approval was sought from the local Health Research Authority, who felt after consideration of the methodology, that specific ethical approval was not required for this study. The questionnaire comprised of nine questions and was divided into categories described below. A copy of the questionnaire in full is available as Supplementary materials.
Patients were asked to self-report their age and sex and provide details of their IBD subtype and how long they had had their diagnosis as they understood it. They were asked to estimate how many colonoscopies they had undergone since diagnosis. Patients were also asked to demonstrate their understanding of the indications for colonoscopy. They were provided with eight potential indications, four of which are accepted indications and four which were “sham” indications. Choices available - 1) to assess how severe the disease is, 2) to see if you have constipation (sham), 3) to see if your treatment is working, 4) to see if there is another cause for your symptoms, 5) to get samples of the bowel wall (biopsies), 6) to see if you are digesting food properly (sham), 7) to get blood sample (sham), and 8) to check for intestinal worms (sham).
The patients were asked to address the burden of various aspects of the procedure using a numerical grading score 1 to 5, where 1 represents least burden and 5 most burden. Parameters evaluated included: worries/concerns about the procedure/risks, bowel preparation, disruption to life, procedural discomfort and travel to and from hospital. They were then given the opportunity to describe the entire colonoscopy experience using one of the following qualitative statements: not unpleasant, neither unpleasant nor pleasant, bearable, unpleasant, and very unpleasant.
Finally, the patients were asked to comment on how often they felt they could tolerate the procedure (once a year, once every 2 years, once every 3 years, once every 5 years, or as often as their doctor felt it appropriate). They were also given a space to add further comments about any aspect of their colonoscopy experience.
Data was collected, stored and analysed on StatView™ 5.0.1 statistics program (Abacus Corporation, Baltimore, Maryland, USA). Where appropriate, comparison of continuous data was performed using the student’s t-test.
94/295 patients completed the questionnaire (32% response rate). 46% were male. Mean age was 43.2 years (male 47.1 years; female 39.9 years). Table 1 presents combined demographic, disease and tolerance data on the entire cohort of responders. More than 60% of responders to the questionnaire had their disease for longer than 5 years. The most burdensome aspect of the procedure reported was bowel preparation and procedural discomfort.
Table 2 shows the intergroup comparison data. Of note, females found all aspects of colonoscopy more burdensome than their male counterparts, with all parameters reaching statistical significance bar procedural discomfort. Of interest, older patients (>55 years) reported less concerns about the procedure and associated risk, and also were less burdened by bowel preparation. Finally, patients with a longer disease duration reported higher burden of procedural discomfort.
Patients demonstrated good knowledge in their understanding of the indications for colonoscopy, with 69.2% answering all four indications correctly. Figure 1 illustrates patient responses to the individual indications for colonoscopy. Figure 2 indicates the qualitative summary statements by IBD patients as to general tolerability of the procedure. The majority of patients thought colonoscopy was bearable (53%), with only a small minority (13%) describing it as very unpleasant. Figure 3 indicates the frequency that respondents would be prepared to tolerate colonoscopy in future. The majority of patients (55%) would have the procedure ‘as frequently as required if their physician felt it appropriate’. A very small minority (7%) responded that they would only prepared to have colonoscopy every 5 years.
Mucosal healing has evolved as a key endpoint in the assessment of therapeutic response to medical therapy in IBD patients. Requests for colonoscopy are therefore likely to continue to increase in this patient group making it particularly important to gain insight into the patients’ perceptions of this procedure. A good patient experience in the endoscopy unit is critical in facilitating long term medical management and continued engagement in services in this cohort. We have found that both women and young patients have a heightened concern about this procedure although actual reported discomfort following the procedure did not differ in these sub-groups from the rest of the cohort. Patients with an IBD disease duration of more than 5 years expressed significantly more procedural discomfort than patients with a shorter duration.
Our research highlights a significant difference in the perception of colonoscopy between men and women. Females had a significantly worse perception of colonoscopy in four key areas: concerns about the procedure and associated risks; tolerance of bowel preparation; disruption to life and travel concerns to and from hospital, but not procedural discomfort itself. The results illustrate that women have higher pre-procedural anxiety than men. There are limited studies differentiating between gender and pre-procedure anxiety in patients with IBD, but our findings are supported by other work examining procedural anxiety in a non-IBD population undergoing colonoscopy9,10.
In our cohort, females showed a tendency towards increased procedural discomfort compared with males, approaching statistical significance. The majority of previous work on this subject suggests that females experience more discomfort during colonoscopy11–13, although this is not a universal finding14. It has been suggested that performing colonoscopy on females may be more difficult and more uncomfortable because of previous gynaecological surgery or differing colonic and pelvic anatomy12, and of note in this respect the procedure usually takes longer in women15.
Bowel preparation in colonoscopy is another important area of patient concern, with one study suggesting it is the most unpleasant part of the whole process16. This was mirrored in our group of patients with bowel preparation perceived as the most burdensome aspect of the whole episode (joint top with procedural discomfort). In our study, women were significantly less satisfied with bowel preparation compared to men, a finding supported by others17. The negative symptoms associated with bowel preparation may magnify pre-procedural anxiety in this group of patients18.
Our results showed significant age-related differences in two measured outcomes. Patients aged 55 years or more were less worried about the procedure and risks. Secondly, this group reported that they found bowel preparation less burdensome than their younger counter parts. In keeping with our findings, a study showed older people expressed less discomfort associated with bowel preparation than younger patients and were overall, more satisfied17.
However, we did not observe differences in procedural discomfort between the two age groups. The literature in this respect is conflicting. A Finnish retrospective study reported that older patients tolerate the procedure better than younger patients9. Conversely, Kim et al. reported no significant age-related differences19. Other studies have indicated older patients may tolerate the procedure less12. These inconsistencies between studies may reflect differences in the indication for and the underlying pathologies of the respective patient groups studied. Additionally, ‘older age’ is categorized differently between studies.
Our study showed that patients who had IBD for more than 5 years expressed significantly more discomfort than patients having the disease for less than 5 years. This finding may relate to underlying disease factors, such as inflammation, stricturing or reduced intestinal compliance resulting in increased technical difficulty and reduced patient tolerance. One large study reported that higher doses of sedation are required amongst IBD patients with active disease20. An alternative explanation is that endoscopists now administer lower doses than historically in response to tighter monitoring and auditing of sedation practices. In a single centre study from the UK of sedation practices over a 10 year period sedation rates for outpatient diagnostic upper endoscopy reduced by 54%21. Certainly, in light of the 2004 NECPOD report ‘Scoping our Practice’22, sedation in all patient groups, particularly the elderly, has come under close scrutiny, and inevitably has influenced recent practice in endoscopic sedation. Kale et al. suggested endoscopy sedation should be individualised to the specific need of the IBD patient, particularly those that have active disease20 and this is clearly pertinent to the vulnerable subgroups we have identified, namely women and young patients.
The majority of our patients were prepared to undergo colonoscopy as frequently as their physician felt it appropriate. Similarly the majority also found colonoscopy ‘bearable’. These findings support the evidence that colonoscopy is generally associated with high levels of patient satisfaction and willingness to return23. This is a particularly important factor in patients with IBD, given that they are likely to undergo repeated procedures, especially when they enter into colorectal cancer surveillance programs. Our data suggests a high level of understanding of the indications of the procedure, which may further explain why most are prepared to undergo colonoscopy as frequently as needed.
This study has some limitations, particularly since responses were obtained retrospectively which opens it up to recall bias. If the most recent colonoscopy was a negative experience, irrespective of previous positive experiences, this may have impacted adversely. In one study, a fifth of patients reported that colonoscopy was more uncomfortable than they had expected24 and a previous experience of pain during colonoscopy was found to influence the perceived experience of pain during a subsequent procedure9. We sought to evaluate the patients’ qualitative perception of colonoscopy but a more objective and validated verification of discomfort during colonoscopy (or immediately following) might have led to different conclusions. We did not assess the patients’ requirement for sedation and analgesia, which may also have later influenced patients’ perception given the recognised retrograde-amnesic effect of benzodiazepines but we feel our study design best reflects the patient experience in routine clinical practise. Finally, our questionnaire did not include questions relating to ‘procedural embarrassment’, which has been significantly linked to non-compliance in endoscopic screening programs25.
Providing patients with a positive experience is clearly important in maintaining continued engagement with medical services. Our findings indicate steps need to be taken to address the particular concerns of women and young patients with IBD in advance of their procedure. How might we ameliorate perceived pre-procedural patient concerns better? Consultation prior to colonoscopy with a clinician is associated with increased patient satisfaction26. This should form part of the consent process that is ideally performed before the day of procedure and after the clinic consult, as is the practice for the national bowel cancer screening programme. However, this may not always be logistically feasible. Music during the procedure has been shown to improve procedural experience and reduce anxiety amongst women and increases wellbeing amongst men, as well as significantly reducing discomfort27,28. Similarly, continuity of endoscopist for each procedure also lowers anxiety in females29, although this approach may be difficult to adopt in NHS endoscopy units that usually have pooled waiting lists and endoscopic trainees. Reviewing previous sedation requirements and recorded pain scores should be routine endoscopic practice to individualise the sedation plan. The analgesic adjunct of inhaled Nitrous oxide, a quick acting potent analgesic and anxiolytic, may also be helpful reducing excessive intravenous sedation30. By taking all these factors into account the global patient experience can be improved.
In conclusion, our research highlights a significant difference in the perception of colonoscopy dependent on gender, age of the patient and disease duration. These results should prompt endoscopy units to improve the experience of colonoscopy particularly amongst these subgroups of patients with IBD. In the future surrogate markers such as faecal calprotectin may reduce the burden of colonoscopy. In the meantime, further research is required to develop simple clinical tools to better identify and improve the experience of vulnerable patients that would otherwise tolerate the colonoscopic experience poorly.
F1000Research: Dataset 1. Table showing raw data collection from questionnaires, 10.5256/f1000research.6889.d10284131
SM: Article write up and data collection; CA: Article write up and data collection; LM: Data collection; VC: Data collection; PN: Data collection; AP: Data collection; RP: Article write up and data collection.
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Competing Interests: No competing interests were disclosed.
Competing Interests: No competing interests were disclosed.
Competing Interests: No competing interests were disclosed.
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